Hot-water heater.



G. REIGHHARD.

HOT WATER HEATER.

APPLIOATION FILED MAY 29, 1912.

Patented June 24, 1913.

INVENTOR Reichhoxrol George BYv ATTORNEYS TIN T STATES T ion.

GEORGE BEICHI-IARD, on NEW YORK, N. Y.

HOT-WATER HEATER.

To all whom it may concern:

Be it known that I, GEORGE REIGHHARD, a citizen of the United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and Improved HotaterHeater, of which the following is a full, clear, and exact description.

The invention relates to hot water heaters,

such as are used in apartment houses, hotels and other places forsupplying the difierent apartments or rooms with hot water.

The object of the invention is to provide a new and improved hot waterheater provided with a preliminary hot water heater to insure quickheating of the water and a proper supply of hot water even in case alarge amount of Water is used in a given time, and the waste gases ofthe hot water.

heater are utilized to heat the feed water thereof by the preliminaryhot water heater, thus requiring comparatively little fuel for quicklyheating the water to the desired. de

gree.

For the purpose mentioned use is made of a preliminary hot water heaterhaving a shell and water-circulating means within the shell, the shellbeing interposed in the smoke flue ofthe ordinary hot water heater tocause the products of combustion of the ordinary hot water heater to,circulate through the shell with a view to heat the water passingthrough the said water-circulating means, the latter being connected atone end with a source of water supply and being connected at the otherend with the inlet to the water compartment of the ordinary hot waterheater.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of-this specification, in

which similar characters of reference indicate corresponding parts inall the views. 7

Figure 1 is a front elevation of the hot water heater; Fi 2 isanenlarged sectional front elevation o the preliminary hot water heater;and Fig. 3 is a transverse section of the same on the line 3.3 of Fig.2.

The shell A of the preliminary hot water heater is preferably in theformof a box and is provided at the bottom and top with smoke inlets andoutlets 'B and C, connected with the sections Band D of the smoke flueof an ordinaryhot-water heater E of any approved construction. The hotwater heater E is providedwith the usual water Specification of LettersPatent. Patented June 241:, 1913. Application filed May 29, 1912. SerialNo. 700,374.

compartment, and a combustion chamber connected with the smoke fluesection D so that the products of combustion arising from the burningfuel in the hot water heater E pass through the shell A. Within theshell A is arranged a horizontally-disposed bafiie' plate F securedatone end to a box G having a horizontal partition G dividing the boxinto a water inlet chamber G and a water outlet chamber G The box Gcloses o-neend of the'shell A and the battle plate F extends to within adistance of the other closed end of the shell A, and within the saidshell A are arranged a series of U-shaped water-circulating pipes H,

each opening at one end into the water inlet chamber G and at the otherend into the water outlet chamber G it being understood that the saidpipes are secured at their ends to the inner side of the box G, as willbe readily understood by reference to Fig. 2. The water inlet chamber Gis .connected with a pipe I leading to a water main or other suitablesource of water supply, and the water-outlet chamber G is connected by apipe J with a water inlet pipe K leading to the water compartment of theboiler E. The pipe K is provided with a branch pipe K leading tothebottom of a water reservoir L connected at its top by a pipe N with thedischarge end of'the water compartment of the heater E, and the waterreservoir L is also rovided at the top with the usual outlet 0 ordistributing the hot water to the dilferent rooms in the building inwhich the water heater is used. I

' lVhen the water heater is in use then water from the water main orother source of water-supply passes by way of the pipe I into the waterinlet chamber G and from the latter the water passes through thecirculating pipes H heated by the products of combustion circulatingthrough the shell A on their way from the combustion chamber of the hotwater heaterE tothe smoke stack, as previously explained, and the heatedwater passes from the pipes H into the water outletchamber G and isconducted by way of the pipes J and K into the water compartmentof thehot water heater E, in which the water is heated to the desired egree tovbe finally discharged into the water reservoir L by way-of the pipe Nfor distribution to. the various rooms by way of the pipe 0.

From the foregoing it will be seen that the water from the street mainor other source of supply receives 'a preliminary heating in thepreliminary heater prior to the water passing into the hot Water heaterE, and consequently it takes but a comparatively short time to heat thewater to the desired degree even if a large amount of Water is withdrawnat one time from the rQSQIVOiI L'." It will also be noticed that theproducts ofcombustion or waste gases from the hotwater heater E areutilized to heat the water circulating through the circulating pipes H,and hence less fuel is required in the hot water heater E to quicklyheat the water to the desired degree in the manner set forth.

The front A and the rear A of the shell. Aare preferably hinged to thebottom of the shell to permit of conveniently opening the said front andrear for cleaning the preliminary hot water heater of any soot that mayaccumulate therein. Suitable fastening devices P are employed forlocking the front A and the rear A to the top of the shell as indicatedin Figs. 1 and 3/ The shell A is preferably supported by a bracket Qattached to the hot water heater E and also by the pipe I connected withthe box G. Having thus described my invention, I claim as new and desireto secure by Letters Patent:

1. In a hot water heating system, the combination With a main waterheater having a combustion chamber, a smoke flue and a water compartmenthaving an inlet and outlet,

and a water reservoir with which the inlet and outlet of the said watercompartment are connected, of a preliminary water heater interposed inthe smoke flue for the passage of the products of combustion through thesame, an inlet pipe leading from a water main to the preliminary heater,and a discharge pipe leading from the preliminary heater and connectedwith the inlet of the water compartment of the main Water heater betweenthe said heater and reservoir.

2. In a hot Water heating system, the com bination of an ordinary waterheater having a combustion chamber, a water compartment provided with aninlet and an outlet, and a smoke fiue for carrying oif the products ofcombustion from the said combustion chamberfa water reservoir connectedat one end with the inlet and at the other end with the outlet ofthevwatercompartment, the reservoir having an outlet for carrying offthe hot Water, and a preliminary water heater having ashell andwater-circulating means within the said shell, the said shell beinginterposed inthe said smoke flue for 'thepassage of the products ofcombustion

